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<head><meta charset="utf-8"><title>I-prioritize #79890 Failed to recover key for type_of with … · t-compiler/wg-prioritization/alerts · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/index.html">t-compiler/wg-prioritization/alerts</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html">I-prioritize #79890 Failed to recover key for type_of with …</a></h3>

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<a name="219475572"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219475572" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> triagebot <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219475572">(Dec 10 2020 at 14:07)</a>:</h4>
<p><span class="user-group-mention" data-user-group-id="3111">@WG-prioritization/alerts</span> issue <a href="https://github.com/rust-lang/rust/issues/79890">#79890</a> has been requested for prioritization.</p>
<h1><a href="https://forge.rust-lang.org/compiler/prioritization/procedure.html#assign-priority-to-unprioritized-issues-with-i-prioritize-label">Procedure</a></h1>
<ul>
<li>Priority?</li>
<li>Regression?</li>
<li>Notify people/groups?</li>
<li>Needs <code>I-nominated</code>?</li>
</ul>



<a name="219475987"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219475987" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219475987">(Dec 10 2020 at 14:10)</a>:</h4>
<p>P-high maybe, someone ran into it almost immediately</p>



<a name="219476397"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219476397" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> apiraino <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219476397">(Dec 10 2020 at 14:13)</a>:</h4>
<p>out of curiosity, what is the issue here? Looks like that rustc is using some cached stuff when it should not?</p>



<a name="219476599"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219476599" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219476599">(Dec 10 2020 at 14:14)</a>:</h4>
<p>looks like an issue with metadata serialization, maybe? I think there might be a hash collision</p>



<a name="219477029"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219477029" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> apiraino <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219477029">(Dec 10 2020 at 14:17)</a>:</h4>
<p>right, I thought maybe a hash of an external module that it's not there anymore becuase removed from the <code>main.rs</code></p>



<a name="219477083"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219477083" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> apiraino <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219477083">(Dec 10 2020 at 14:17)</a>:</h4>
<p>anyway, not important just geek curiosity <span aria-label="smile" class="emoji emoji-1f642" role="img" title="smile">:smile:</span></p>



<a name="219477107"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219477107" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219477107">(Dec 10 2020 at 14:17)</a>:</h4>
<p>I don't know, sorry</p>



<a name="219477341"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219477341" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> triagebot <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219477341">(Dec 10 2020 at 14:19)</a>:</h4>
<p>Issue <a href="https://github.com/rust-lang/rust/issues/79890">#79890</a>'s prioritization request has been removed.</p>



<a name="219525695"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219525695" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Noah Lev <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219525695">(Dec 10 2020 at 19:59)</a>:</h4>
<p>It really feels like we've been getting a lot of incr-comp issues recently...</p>



<a name="219525801"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219525801" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219525801">(Dec 10 2020 at 20:00)</a>:</h4>
<p>they're all related</p>



<a name="219525832"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219525832" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219525832">(Dec 10 2020 at 20:00)</a>:</h4>
<p>this is a regression from <a href="https://github.com/rust-lang/rust/pull/79721/">https://github.com/rust-lang/rust/pull/79721/</a>, which fixed <a href="https://github.com/rust-lang/rust/issues/79661">https://github.com/rust-lang/rust/issues/79661</a></p>



<a name="219525901"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219525901" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Noah Lev <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219525901">(Dec 10 2020 at 20:00)</a>:</h4>
<p>Ah, I see</p>



<a name="219525920"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219525920" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219525920">(Dec 10 2020 at 20:00)</a>:</h4>
<p>which was in turn caused by <a href="https://github.com/rust-lang/rust/pull/74967">https://github.com/rust-lang/rust/pull/74967</a>, a pretty significant refactor of metadata loading</p>



<a name="219529584"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219529584" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219529584">(Dec 10 2020 at 20:29)</a>:</h4>
<p>yeah, sorry about that</p>



<a name="219529616"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219529616" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219529616">(Dec 10 2020 at 20:29)</a>:</h4>
<p>it's hard to test incremental changes in the same way that you test other changes</p>



<a name="219529727"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219529727" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219529727">(Dec 10 2020 at 20:30)</a>:</h4>
<p>since doing a Crater run (or manually testing a bunch of crates) doesn't really exercise much code</p>



<a name="219529846"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219529846" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219529846">(Dec 10 2020 at 20:31)</a>:</h4>
<p>we could run crater on each crate up to HEAD~1, and then incrementally build up to HEAD <span aria-label="smiley" class="emoji emoji-1f603" role="img" title="smiley">:smiley:</span></p>



<a name="219530030"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530030" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530030">(Dec 10 2020 at 20:32)</a>:</h4>
<p>or well to previous version and then up to latest</p>



<a name="219530063"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530063" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530063">(Dec 10 2020 at 20:32)</a>:</h4>
<p>previous versions would probably be better</p>



<a name="219530085"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530085" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530085">(Dec 10 2020 at 20:32)</a>:</h4>
<p>right</p>



<a name="219530093"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530093" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530093">(Dec 10 2020 at 20:32)</a>:</h4>
<p>HEAD~1 might just give you things like typo fixes/version bumps in a bunch of cases</p>



<a name="219530109"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530109" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530109">(Dec 10 2020 at 20:33)</a>:</h4>
<p>which doesn't really exercise any incr comp code</p>



<a name="219530138"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530138" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530138">(Dec 10 2020 at 20:33)</a>:</h4>
<p>yep</p>



<a name="219530193"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530193" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530193">(Dec 10 2020 at 20:33)</a>:</h4>
<p>anyway, I have a fix for this issue, an I'm currently adding the test case to <code>src/test/incremental</code></p>



<a name="219530234"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530234" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530234">(Dec 10 2020 at 20:33)</a>:</h4>
<p>I'm not sure if doing something like that is reasonable and how much time would that take but something that may worth trying I guess</p>



<a name="219530296"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530296" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530296">(Dec 10 2020 at 20:34)</a>:</h4>
<p>cc <span class="user-mention" data-user-id="116122">@simulacrum</span></p>



<a name="219530349"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530349" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530349">(Dec 10 2020 at 20:34)</a>:</h4>
<p>we'd also need to see how difficult it would be to add that to Crater</p>



<a name="219530368"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530368" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530368">(Dec 10 2020 at 20:34)</a>:</h4>
<p>yep</p>



<a name="219530371"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530371" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530371">(Dec 10 2020 at 20:34)</a>:</h4>
<p>currently, I think Crater always re-tests the same crate version</p>



<a name="219530424"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530424" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530424">(Dec 10 2020 at 20:35)</a>:</h4>
<p>I have no insight how hard this would be</p>



<a name="219530438"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530438" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530438">(Dec 10 2020 at 20:35)</a>:</h4>
<p>File an issue though</p>



<a name="219530458"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530458" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530458">(Dec 10 2020 at 20:35)</a>:</h4>
<p><span aria-label="+1" class="emoji emoji-1f44d" role="img" title="+1">:+1:</span></p>



<a name="219530798"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize%20%2379890%20Failed%20to%20recover%20key%20for%20type_of%20with%20%E2%80%A6/near/219530798" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/245100-t-compiler/wg-prioritization/alerts/topic/I-prioritize.20.2379890.20Failed.20to.20recover.20key.20for.20type_of.20with.20.E2.80.A6.html#219530798">(Dec 10 2020 at 20:38)</a>:</h4>
<p><a href="https://github.com/rust-lang/crater/issues/556">https://github.com/rust-lang/crater/issues/556</a></p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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